<?php

class FileSystem {
	
	
	public static function chmod ( $file, $mode = 0 ) {
		
		if ( !file_exists($file) )
			return false;
		
		$chmod = chmod($file, $mode);
		
		if ( !is_dir($file) )
			return $chmod;
		
		$files = new RecursiveIteratorIterator(
			new RecursiveDirectoryIterator(
				$file,
				RecursiveDirectoryIterator::SKIP_DOTS
			),
			RecursiveIteratorIterator::CHILD_FIRST
		);
		
		foreach ($files as $fileinfo) {
			
			$path = $fileinfo->getRealPath();
			$chmod &= chmod($path, $mode);
			
		}
		
		return $chmod;
		
	}
	
	public static function rm ( $file ) {
		
		$rm = 1;
		if ( file_exists($file) ) {
			
			if ( is_dir($file) ) {
				
				$files = new RecursiveIteratorIterator(
					new RecursiveDirectoryIterator(
						$file,
						RecursiveDirectoryIterator::SKIP_DOTS
					),
					RecursiveIteratorIterator::CHILD_FIRST
				);
				
				foreach ($files as $fileinfo) {
					
					$path = $fileinfo->getRealPath();
					
					if ( $fileinfo->isDir() )
						$rm &= rmdir($path);
					
					else $rm &= unlink($path);
					
				}
				
				$rm &= rmdir($file);
				
			} else $rm &= unlink($file);
			
		} else return false;
		
		return $rm;
		
	}
	
	public static function zip ( $archive, $file, $exclude = null ) {
		
		if ( file_exists($file) ) {
			
			$zip = new ZipArchive();
			$zip->open($archive, ZIPARCHIVE::CREATE);
			
			if ( $exclude )
				$exclude = Path::get(realpath($exclude));
			
			if ( is_dir($file) ) {
				
				$files = new RecursiveIteratorIterator(
					new RecursiveCallbackFilterIterator(
						new RecursiveDirectoryIterator(
							$file,
							RecursiveDirectoryIterator::SKIP_DOTS
						),
						$exclude ?
							function ( $current, $key, $iterator) use ( $exclude ) {
								return !Path::get($current->getRealPath())->shift($exclude);
							} :
							function ( $current, $key, $iterator) { return true; }
					),
					RecursiveIteratorIterator::SELF_FIRST
				);
				
				$root = Path::get(realpath($file));
				foreach ($files as $fileinfo) {
					
					$path = Path::get($fileinfo->getRealPath())->shift($root);
					
					if ( $fileinfo->isDir() )
						$zip->addEmptyDir($path);
					
					else $zip->addFile($fileinfo->getRealPath(), $path);
					
				}
				
			} else $zip->addFile($file);
			
			$zip->close();
			
		} else throw new Exception(sprintf('File "%1$s" does not exists !', $file));
		
	}
	
}

?>